sandwich

panna väliin

voileipä A dish or foodstuff where two or more slices of bread serve as the wrapper or container of some other food.
2002, Serena Carrington, Avalon, Writers Club Press, p.92:

He laid out a linen tablecloth and a few sandwichs from some bread, dressing, and beef.

And the only "care" I could offer was egg sandwichs and Lilly's unfaltering attention.

(..) our local agricultural fair in Warwickshire even has a category for Victoria sandwiches baked by male bakers.